#define _CRT_SECURE_NO_WARNINGS 1

#include<stdio.h>
int main()
{
    int m = 0;
    int n = 0;
    scanf("%d%d", &m, &n);
    int a[m][n];
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j < n; j++)
        {
            scanf("%d", &a[i][j]);
        }
    }

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            printf("%d ", a[j][i]);
        }
        printf("\n");
    }
    return 0;

}


#include<stdio.h>
int main()
{
    int n = 0;
    scanf("%d", &n);
    int a[n][n];
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            scanf("%d", &a[i][j]);
        }
    }

    int flag = 0;
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < i; j++)
        {
            if (a[i][j] != 0)
            {
                flag = 1;
            }
        }
    }
    if (flag == 1)
    {
        printf("NO\n");
    }
    else
    {
        printf("YES\n");
    }

    return 0;
}
